Yep. As soon as she conceded, it legally doesn't matter if the Trump campaign cheated. When she conceded the election, that locked in the result, regardless of what might come to light later.

My pet theory is that Dems don't want election rigging to come to light ... because then people might start looking at the primaries as well.

Take a look at this before dismissing these concerns out of hand.

Their own post says

Nothing conclusive, unfortunately…